**Crystalline solids** typically have:
- No definite arrangement of particles
- Long-range order, sharp melting points, anisotropic properties (except cubic)
- Always isotropic properties
- Particles in random arrangement
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Correct answer: B. Long-range order, sharp melting points, anisotropic properties (except cubic)
**Crystalline solids:** regular, periodic arrangement over long range
sharp melting point; anisotropic properties (except cubic).
**Examples:** NaCl, diamond, graphite, metals.